Home / 15,384.25-21,230.27-8,310.68

Finding the Fourth Proportional to 15,384.25, 21,230.27 and 8,310.68

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Solution

The fourth proportional to 15,384.25, 21,230.27 and 8,310.68 is: 11,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.25 : 21,230.27 = 8,310.68 : x
  2. Step 2: Convert to fraction form
    15,384.25/21,230.27 = 8,310.68/x
  3. Step 3: Cross multiply
    15,384.25x = 21,230.27 × 8,310.68
  4. Step 4: Simplify right side
    15,384.25x = 176,437,832.58
  5. Step 5: Solve for x
    x = 176,437,832.58/15,384.25
  6. Step 6: Final answer
    x = 11,468.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.